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July 4, 2007

Synovial Lactic Acid and Septic Arthritis

Author Affiliations

Letters Section Editor: Robert M. Golub, MD, Senior Editor.

JAMA. 2007;298(1):40. doi:10.1001/jama.298.1.40-a

To the Editor: In their Rational Clinical Examination article, Dr Margaretten and colleagues1 concluded that the synovial fluid white blood cell count and the corresponding percentage of polymorphonuclear cells are the most useful markers in identifying septic arthritis while waiting for the Gram stain and culture test results. Synovial fluid glucose, protein, and lactate dehydrogenase were not found to be helpful.